<?php

namespace Yzh;

use Yzh\Exception\ConfigException;
use Yzh\Exception\ExceptionCode;
use Yzh\Exception\HttpException;
use Yzh\Config;
use Yzh\Utils\Rsa;
use Yzh\Utils\Des;
use Yzh\Utils\Hmac;
use Yzh\Utils\MessString;
use Yzh\Model\BaseResponse;

defined("JSON_UNESCAPED_UNICODE") or define("JSON_UNESCAPED_UNICODE", 256);

class BaseClient
{
    const SDK_NAME = "yunzhanghu-sdk-php";
    const SDK_VERSION  = "2.0.22";
    const ENV_PROD = "yzh_env_prod";
    const ENV_SANDBOX = "yzh_env_sandbox";

    protected $env;
    /**
     * @var Config
     */
    protected $config;
    protected static $service_name;

    protected static $env_service_host_map = array(
        self::ENV_PROD => array( // 正式环境
            'payment' => 'https://api-service.yunzhanghu.com', // 实时支付服务接口域名
            'tax' => 'https://api-service.yunzhanghu.com',
            'authentication' => 'https://api-service.yunzhanghu.com',
            'invoice' => 'https://api-service.yunzhanghu.com',
            'dataservice' => 'https://api-service.yunzhanghu.com',           // 数据服务接口域名
            'apiusersignservice' => 'https://api-service.yunzhanghu.com',    // API 用户签约接口域名
            'h5usersignservice' => 'https://api-service.yunzhanghu.com',     // H5 用户签约接口域名
            'uploadusersignservice' => 'https://api-service.yunzhanghu.com', // 用户签约信息上传接口域名
            'bizlicgxv2h5apiservice' => 'https://api-aic.yunzhanghu.com',    // 个体工商户注册服务（共享大额 H5+API）接口域名
            'bizlicgxv2h5service' => 'https://api-aic.yunzhanghu.com',       // 个体工商户注册服务（共享大额 H5）接口域名
            'bizlicxjjh5apiservice' => 'https://api-aic.yunzhanghu.com',     // 个体工商户注册服务 (云账户新经济 H5+API）接口域名
            'bizlicxjjh5service' => 'https://api-aic.yunzhanghu.com',        // 个体工商户注册服务（云账户新经济 H5）接口域名
            'ins' => 'https://api-ins.yunzhanghu.com',         // 保险服务接口域名
            'task' => 'https://api-task.yunzhanghu.com',       // 任务库服务接口域名
            'usercollectservice' => 'https://api-user.yunzhanghu.com', // 用户信息收集接口域名
            'calculatelaborservice' => 'https://api-service.yunzhanghu.com', // 连续劳务税费试算接口域名

        ),
        self::ENV_SANDBOX => array( // 沙箱环境
            'payment' => 'https://api-service.yunzhanghu.com/sandbox',   // 实时支付服务接口域名
            'authentication' => 'https://api-service.yunzhanghu.com/sandbox', // 用户信息验证接口域名
            'apiusersignservice' => 'https://api-service.yunzhanghu.com/sandbox',   // API 签约接口域名
            'h5usersignservice' => 'https://api-service.yunzhanghu.com/sandbox',   // H5 签约接口域名
            'calculatelaborservice' => 'https://api-service.yunzhanghu.com/sandbox',   // 连续劳务税费试算接口域名
            'realnameservice' => 'https://api-service.yunzhanghu.com/sandbox',   // 连续劳务税费试算接口域名
            'ins' => '',       // 保险服务接口域名
            'aic' => 'https://api-aic.yunzhanghu.com/sandbox',       // 个体工商户注册服务接口域名
            'task' => '',      // 任务库服务接口域名
            'dataservice' => '', // 数据服务接口域名
        ),
    );

    protected $rsa;
    protected $hmac;
    protected $des;
    protected $app_key;
    protected $sign_type;

    public function __construct($config)
    {
        if (!$config instanceof Config) {
            throw new ConfigException('config 参数必须是 Yzh\\Config 实例', ExceptionCode::CONFIG_ERROR_WRONG_PARAM);
        }
        $this->config = $config;
        $this->setEnv($config->env);

        if ($this->config->sign_type == Config::SIGN_TYPE_RSA) {
            $this->rsa = new Rsa($this->config->app_private_key, $this->config->yzh_public_key);
            $this->sign_type = Config::SIGN_TYPE_RSA;
        } else if ($this->config->sign_type == Config::SIGN_TYPE_HMAC) {
            $this->hmac = new Hmac($this->config->app_key);
            $this->sign_type = Config::SIGN_TYPE_HMAC;
        } else {
            throw new ConfigException("签名方式配置错误", ExceptionCode::CONFIG_ERROR_WRONG_SIGN_TYPE);
        }

        $this->app_key = $this->config->app_key;
        $this->des = new Des($this->config->app_des3_key);
    }

    public function setEnv($envName)
    {
        if (!in_array($envName, array(self::ENV_PROD, self::ENV_SANDBOX), true)) {
            throw new ConfigException("请选择正确的服务环境", ExceptionCode::CONFIG_ERROR_WRONG_ENV);
        }
        $this->env = $envName;
        return $this;
    }

    protected function get($url, $data, $header, $option)
    {
        $curl = curl_init();

        curl_setopt_array($curl, array(
            CURLOPT_URL =>  $url  . '?' . http_build_query($data),
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CONNECTTIMEOUT => $option->getConnectTimeout(),
            CURLOPT_TIMEOUT => $option->getTimeout(),
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => 'GET',
            CURLOPT_HTTPHEADER => $header,
        ));

        $response = curl_exec($curl);

        if ($response == false) {
            $errMsg = curl_error($curl);
            curl_close($curl);
            throw new HttpException("请求失败,response:" . $errMsg, 0);
        }

        $curlInfo = curl_getinfo($curl);
        curl_close($curl);

        if ($curlInfo['http_code'] != 200) {
            throw new HttpException("请求失败,response:" . $response, $curlInfo['http_code']);
        }
        return $response;
    }

    /**
     * @var Option $option 
     */
    protected function post($url, $data, $header, $option)
    {
        $curl = curl_init();

        curl_setopt_array($curl, array(
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CONNECTTIMEOUT => $option->getConnectTimeout(),
            CURLOPT_TIMEOUT => $option->getTimeout(),
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => 'POST',
            CURLOPT_POSTFIELDS => http_build_query($data),
            CURLOPT_HTTPHEADER => $header,
        ));
        $response = curl_exec($curl);

        if ($response == false) {
            $errMsg = curl_error($curl);
            curl_close($curl);
            throw new HttpException("请求失败,response:" . $errMsg, 0);
        }

        $curlInfo = curl_getinfo($curl);
        curl_close($curl);

        if ($curlInfo['http_code'] != 200) {
            throw new HttpException("请求失败,response:" . $response, $curlInfo['http_code']);
        }
        return $response;
    }

    protected function send($method, $path, $request, $responseDataClass, $option = null)
    {
        if (!is_null($option) && !$option instanceof Option) {
            throw new ConfigException("参数 option 必须为 Yzh\\Request\\Option 实例", ExceptionCode::CONFIG_ERROR_WRONG_PARAM);
        }

        if (is_null($option)) {
            $option = new Option(array('timeout' => $this->config->timeout));
        }

        // 获取接口请求参数
        $requestData = $this->getRequestData($request);
        $responseDecoder = property_exists($request, 'data_type') && $request->data_type == 'encryption' ? $this->des : null;

        // 获取 url 的 path 部分, 将 path 部分拼接到传入的 path 上
        $baseUrl = self::$env_service_host_map[$this->env][$this::$service_name];
        if (empty($baseUrl)) {
            throw new ConfigException('该环境不支持该请求,环境为:' . $this::$service_name, ExceptionCode::CONFIG_ERROR_UNSUPPORT_URL_IN_CURRENT_ENV);
        }

        $header = array(
            'Content-Type: application/x-www-form-urlencoded',
            'dealer-id: ' . $this->config->app_dealer_id,
            'request-id: ' . $request->getRequestId(),
            'User-Agent: ' . $this->generateUserAgent()
        );

        $url = $baseUrl . $path;
        if ($method == "GET") {
            $body = $this->get($url, $requestData, $header, $option);
        } else {
            $body = $this->post($url, $requestData, $header, $option);
        }

        /**
         * @var BaseResponse $resp
         */
        $resp = new $responseDataClass();
        $respData = json_decode($body, true);
        if (isset($respData['code'])) {
            $resp->setCode($respData['code']);
        }

        if (isset($respData['message'])) {
            $resp->setMessage($respData['message']);
        }

        $requestID = "";
        if (isset($respData['request_id'])) {
            $requestID = $respData['request_id'];
        } elseif (isset($respData['requestID'])) {
            $requestID = $respData['requestID'];
        }
        $resp->setRequestID($requestID);

        if (!isset($respData['data']) || !class_exists($responseDataClass)) {
            return $resp;
        }

        if (is_string($respData['data']) && !is_null($responseDecoder)) {
            $data  = json_decode($responseDecoder->decrypt($respData['data']), true);
        } else {
            $data = $respData['data'];
        }
        $resp->setData($data);
        return $resp;
    }

    private function generateUserAgent()
    {
        return self::SDK_NAME . "/" . self::SDK_VERSION . "/" . PHP_VERSION;
    }

    private function getRequestData($request)
    {
        $encryptedBody = $this->des->encrypt(json_encode($request->getRequestData(), JSON_UNESCAPED_UNICODE));
        $mess = MessString::rand(16);
        $nowts = time();
        if ($this->sign_type == Config::SIGN_TYPE_RSA) {
            $sign = $this->rsa->sign(sprintf("data=%s&mess=%s&timestamp=%d&key=%s", $encryptedBody, $mess, $nowts, $this->config->app_key));
        } else {
            $sign = $this->hmac->sign(sprintf("data=%s&mess=%s&timestamp=%d&key=%s", $encryptedBody, $mess, $nowts, $this->config->app_key));
        }
        return array(
            'data' => $encryptedBody,
            'mess' => $mess,
            'timestamp' => $nowts,
            'sign' => $sign,
            'sign_type' => $this->sign_type,
        );
    }
}